/****************************************************************************
**
** Copyright (C) 2013 Jolla Ltd, author: Aaron McCarthy <aaron.mccarthy@jollamobile.com>
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtPositioning module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** use the contact form at http://qt.digia.com/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#include "qgeocluemaster.h"

#include <master_interface.h>
#include <geoclue_interface.h>
#include <masterclient_interface.h>

QT_BEGIN_NAMESPACE

QGeoclueMaster::QGeoclueMaster(QObject *parent)
:   QObject(parent), m_master(0), m_provider(0), m_client(0)
{
}

QGeoclueMaster::~QGeoclueMaster()
{
    releaseMasterClient();

    delete m_master;
}

bool QGeoclueMaster::hasMasterClient() const
{
    return m_client;
}

bool QGeoclueMaster::createMasterClient(Accuracy::Level accuracyLevel, ResourceFlags resourceFlags)
{
    Q_ASSERT(!m_provider || !m_client);

    if (!m_master) {
        m_master = new OrgFreedesktopGeoclueMasterInterface(QStringLiteral("org.freedesktop.Geoclue.Master"),
                                                            QStringLiteral("/org/freedesktop/Geoclue/Master"),
                                                            QDBusConnection::sessionBus());
    }

    QDBusPendingReply<QDBusObjectPath> client = m_master->Create();
    if (client.isError()) {
        QDBusError e = client.error();
        qCritical("Failed to create Geoclue client interface. Geoclue error: %s",
                  qPrintable(e.errorString(e.type())));
        return false;
    }

    qDebug() << "Geoclue client path:" << client.value().path();

    m_provider = new OrgFreedesktopGeoclueInterface(QStringLiteral("org.freedesktop.Geoclue.Master"),
                                                    client.value().path(), QDBusConnection::sessionBus());
    m_provider->AddReference();

    m_client = new OrgFreedesktopGeoclueMasterClientInterface(QStringLiteral("org.freedesktop.Geoclue.Master"),
                                                              client.value().path(),
                                                              QDBusConnection::sessionBus());

    connect(m_client, SIGNAL(PositionProviderChanged(QString,QString,QString,QString)),
            this, SIGNAL(positionProviderChanged(QString,QString,QString,QString)));

    QDBusPendingReply<> reply = m_client->SetRequirements(accuracyLevel, 0, true, resourceFlags);
    if (reply.isError()) {
        QDBusError e = reply.error();
        qCritical("Failed to set Geoclue positioning requirements. Geoclue error: %s",
                  qPrintable(e.errorString(e.type())));

        releaseMasterClient();
        return false;
    }

    // Need to create the master position interface even though it will not be used, otherwise
    // GetPositionProvider always returns empty strings.
    reply = m_client->PositionStart();
    if (reply.isError()) {
        QDBusError e = reply.error();
        qCritical("Failed to start positioning. Geoclue error: %s",
                  qPrintable(e.errorString(e.type())));

        releaseMasterClient();
        return false;
    }

    return true;
}

void QGeoclueMaster::releaseMasterClient()
{
    if (m_provider)
        m_provider->RemoveReference();
    delete m_provider;
    m_provider = 0;
    delete m_client;
    m_client = 0;
}

QT_END_NAMESPACE
